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+// Electric Machinery and Transformers
+// Irving L kosow 
+// Prentice Hall of India
+// 2nd editiom
+
+// Chapter 14: TRANSFORMERS
+// Example 14-10
+
+clear; clc; close; // Clear the work space and console.
+
+// Given data(from Example 14-9)
+kVA = 1 ; // kVA rating of the transformer
+V_1 = 220 ; // Primary voltage in volt
+V_2 = 110 ; // Secondary voltage in volt
+f_o = 400 ; // Frequency in Hz
+f_f = 60 ; // Frequency in Hz for which the transformer is to be used
+P_orig = 10 ; // Original iron losses of the transformer in W
+
+// Calculations
+// consider only ratio of frequencies for calculating B  
+B = f_o / f_f ; // flux density
+
+P_iron = (P_orig)*(B^2); // Iron losses in W
+
+// Display the results
+disp("Example 14-10 Solution : ");
+
+printf(" \n Since E = k*f*B_m and the same primary voltage is applied to the ");
+printf(" \n transformer at reduced frequency, the final flux density B_mf ");
+printf(" \n increased significantly above its original maximum permissible ");
+printf(" \n value B_mo to :\n B_mf = B_mo * (f_o/f_f) = %.2fB_mo \n ",B );
+
+printf(" \n Since the iron losses vary approximately as the square of the flux density :");
+printf(" \n P_iron = %d W ",P_iron );